Renal Cell Carcinoma Metastasis to Ipsilateral Parotid and Submandibular Glands: Report of a Case with Sonoelastographic Findings

Renal cell carcinoma metastasizing to salivary glands: Systematic review

Distant metastasis to salivary glands is a very rare event. Renal cell carcinoma (RCC) has been known for its high propensity of metastasis to unusual locations and salivary glands are one among those sites. Approximately 0.1% of all salivary gland metastatic neoplasms originate from renal malignancies Literature has reported several studies analysing the metastatic tumors to the oral region. However, very little research work has been published to date to analyse solely the RCC metastasizing to the salivary glands. Thus, this review was conducted to examine the published cases of RCC metastasizing to salivary glands in the literature to date and to learn about their characteristics. An electronic search of the published literature was performed without publication year limitation in PubMed/ Medline, Scopus, Google Scholar, Web of Science, Science Direct, Embase, and Research Gate databases, using mesh keywords like ('Renal cancer', OR 'Renal carcinoma' OR 'Renal cell cancer' OR 'Renal cell carcinoma'), AND ('Metastasis' OR 'Metastases'), And ('Salivary glands' OR 'Parotid gland' OR 'Submandibular gland' OR 'Sublingual gland'). We also searched all related journals manually. The reference list of all articles was also checked. Our research revealed a total of 83 relevant papers (1965-2022) with 100 patients. Parotid was the most predominant gland affected. 8% of patients died with a mean survival time of 1.3 yr. From this research, it can be concluded that RCC metastasizing to salivary glands is a rare occurrence. Careful evaluation of these cases is needed in order to raise awareness of these lesions and gain a better understanding of their characteristics for clinical as well as global implications.

Use of Immune Checkpoint Inhibitors in Elderly Patients With Chronic Kidney Disease and Renal Cell Carcinoma Metastasis of the Parotid Gland: Case Report and Review of the Literature

Renal cell carcinoma metastasis of the parotid gland is extremely rare, and the present literature review found only 23 cases reported in the last two decades. We present a case of a 75-year-old woman with a colon cancer history who had parotid gland metastasis as the first manifestation of second primary kidney cancer. The presence of multiple comorbidities affected medical decision-making. Therefore the patient was treated primarily with immunotherapy. After four cycles of dual immune checkpoint blockade, this advanced patient still benefited and was changed to nivolumab monotherapy as maintenance therapy.

Cytodiagnosis of unusual metastases in parotid gland

Documentation of metastatic lesions in the parotid gland diagnosed by fine-needle aspiration cytology (FNAC) is limited in the cytopathology literature. The metastases within the parotid masquerades clinically as primary neoplasm of parotid. The authors of present case report intent to highlight the importance of FNAC in the diagnosis of metastases in parotid. These diagnoses enable the search for the locations of unknown primaries. The nodules within the parotid masquerading as primary neoplasm have undergone FNAC in five cases. The cytomorphological interpretation of the smears was performed. The diagnosis on cytology was compared with subsequent histological evaluation of the suggested primary neoplasm. FNAC in the five cases revealed the following cytodiagnosis: metastases of ductal carcinoma (2), melanoma (1), deposits of small cell carcinoma (1) and metastases of clear cell renal cell carcinoma (RCC) (1). There was complete concordance when these cytodiagnoses were compared with histological evaluation from the suggested sites of primaries as well-differentiated ductal carcinoma of the breast (2), melanoma of the scalp (1), small cell carcinoma of the lung (1) and clear cell RCC of the kidney (1). The metastases within the parotid can masquerade as primary neoplasm. The cytomorphological patterns and features of metastases are similar to that of their primary neoplasm. Therefore, FNAC over the nodules within the parotid unsuspected for metastases provides valuable information to search for primary neoplasm.

Parotid gland metastasis as an initial presentation of renal cell carcinoma: A case report

This report is to describe a rare case of parotid metastasis from renal cell carcinoma (RCC) in a50- year- old male presenting with unilateral facial symptoms. Following investigations, the patient was diagnosed to have metastatic renal cell carcinoma. He was planned for radio-chemotherapy, and got deceased 1 year afterward.

Rare Case of Clear Cell Renal Cell Carcinoma Metastasizing to Contralateral Kidney and Ipsilateral Parotid more than five Years following Nephrectomy

Backgroung/Aim: Salivary gland malignancies are rare, with only a fraction due to metastases. We report a rare case of the Clear Cell Renal Cell Carcinoma (CCRCC), a subtype of the Renal Cell Carcinoma (RCC), metastasizing to the parotid gland more than five years following nephrectomy.

Case report: A 75-year-old female presented with a unilateral left parotid mass that was growing over the period of 18 months. After clinical and laboratory examinations, the patient underwent left partial superficial parotidectomy with preservation of the facial nerve. The significance of the patient’s history of the CCRCC was pivotal to the histopathological diagnosis of a metastatic CCRCC to the parotid.

Conclusions: The unpredictable nature of the RCC results in the need for a long period of follow-up, as well as having a high degree of suspicion of metastasis in a patient presenting with a medical history of the RCC and a parotid mass.

Renal clear cell carcinoma metastasis to submandibular gland: case report and review of the literature

Metastases from renal clear cell carcinoma (RCCC) to the head and neck (HN) region are rare, representing 8-14% of all RCCC metastases, with the thyroid gland being the most common site of RCCC metastasis in the HN. Metastatic tumors that are located in the salivary glands have a prevalence of 5%, while the submandibular gland is only involved in 1% of the cases. We present the case of a 74-year-old female patient with metastasis to the submandibular gland, 11 years after radical nephrectomy for a RCCC.